US11420252B2 - Punch pin assembly and die casting machine having punch pin assembly - Google Patents

Punch pin assembly and die casting machine having punch pin assembly Download PDF

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Publication number
US11420252B2
US11420252B2 US16/712,074 US201916712074A US11420252B2 US 11420252 B2 US11420252 B2 US 11420252B2 US 201916712074 A US201916712074 A US 201916712074A US 11420252 B2 US11420252 B2 US 11420252B2
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Prior art keywords
punch
heat
rod
punch pin
conducting medium
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US16/712,074
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US20200206807A1 (en
Inventor
Chuan Dai
Jiansheng Wang
Yachun Wan
Yang Han
Hongyin ZHANG
Bo Tian
Gang Zhao
Zhi Chen
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CITIC Dicastal Co Ltd
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CITIC Dicastal Co Ltd
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Assigned to CITIC DICASTAL CO., LTD. reassignment CITIC DICASTAL CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, ZHI, DAI, Chuan, HAN, Yang, TIAN, BO, Wan, Yachun, WANG, JIANSHENG, Zhang, Hongyin, ZHAO, GANG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/203—Injection pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2038—Heating, cooling or lubricating the injection unit

Definitions

  • a punch pin In high-pressure casting machining, a punch pin is operated at a high speed and high pressure in a reciprocating manner in a pressure chamber, and directly contacts die casting liquid (such as molten aluminum) in the pressure chamber, so that it is necessary to ensure good lubricating and cooling effects to ensure a steady die casting process and stable die casting quality.
  • die casting liquid such as molten aluminum
  • a heat-conducting medium such as low-temperature or normal-temperature water flows through the punch pin along a heat-conducting medium conveying loop and then returns to cool the punch pin.
  • heat transfer occurs between the heat-conducting medium at a position, close to the punch pin, in the heat-conducting medium conveying loop and the high-temperature punch pin, and then the heat-conducting medium is heated, and the punch pin is cooled.
  • the heated heat-conducting medium flows out along the heat-conducting medium conveying loop.
  • the heat-conducting medium continuously flows in the heat-conducting medium conveying loop to continuously cool the punch pin.
  • the present disclosure relates to the field of die casting, and more particularly relates to a punch pin assembly and a die casting machine having the punch pin assembly.
  • the present disclosure provides a punch pin assembly and a die casting machine having the punch pin assembly, which can guarantee a cooling effect on a punch pin and also improve the reliability of sealing between a punch pin connection rod and a punch rod as well as between the punch pin connection rod and the punch pin.
  • the first aspect of the present disclosure provides a punch pin assembly.
  • the punch pin assembly includes:
  • the punch rod internally has a first heat-conducting medium conveying channel and a second heat-conducting medium conveying channel; the first heat-conducting medium conveying channel and the second heat-conducting medium conveying channel communicate with outside of the punch rod respectively through a first medium port and a second medium port which are formed in the punch rod;
  • a punch pin connection rod herein the punch pin connection rod internally has an acting heat-conducting medium conveying channel; two ends of the acting heat-conducting medium conveying channel extend out of the punch pin connection rod and separately communicate with the first heat-conducting medium conveying channel and the second heat-conducting medium conveying channel to form a heat-conducting medium conveying loop; and
  • a punch pin herein the punch pin is connected to the punch rod through the punch pin connection rod;
  • At least one portion of the acting heat-conducting medium conveying channel is disposed in a way of achieving heat transfer with the punch pin;
  • the first medium port or the second medium port communicates with a low-temperature heat-conducting medium source to receive a heat-conducting medium for cooling the punch pin;
  • multiple sealing rings are mounted between the punch rod and the punch pin connection rod as well as between the punch pin connection rod and the punch pin, and multiple face seals are formed between the punch rod and the punch pin connection rod as well as between the punch pin connection rod and the punch pin.
  • the punch rod may be a revolving body.
  • the first heat-conducting medium conveying channel may be of a cylindrical shape having an axis coinciding with the revolving center of the punch rod.
  • the second heat-conducting medium conveying channel may be of a barrel shape having an axis coinciding with the revolving center of the punch rod and a circular-ring cross section.
  • the punch pin connection rod may be a revolving body.
  • the acting heat-conducting medium conveying channel may include a third heat-conducting medium conveying channel and a fourth heat-conducting medium conveying channel.
  • the third heat-conducting medium conveying channel may be of a cylindrical shape having an axis coinciding with the revolving center of the punch pin connection rod.
  • the fourth heat-conducting medium conveying channel may be of a barrel shape having an axis coinciding with the revolving center of the punch pin connection rod and a circular-ring cross section.
  • An end, away from the first heat-conducting medium conveying channel, of the third heat-conducting medium conveying channel communicates with an end, away from the first heat-conducting medium conveying channel, of the fourth heat-conducting medium conveying channel.
  • a containing slot may be formed in an end, adjacent to the punch pin connection rod, of the punch pin to contain an end, adjacent to the punch pin, of the punch pin connection rod.
  • the punch rod may be connected to the punch pin connection rod through a thread; and/or the punch pin connection rod may be connected to the punch pin through a thread.
  • the first medium port and the second medium port are disposed adjacent to each other at a first end of the punch rod.
  • the first end of the punch rod is opposite to a second end of the punch rod.
  • the punch pin connection rod is connected to the second end of the punch rod.
  • the first medium port and the second medium port are disposed adjacent to each other at the first end of the punch rod, and the acting component is connected to the end opposite to the first end of the punch rod.
  • a distance from the face seal between the punch rod and a punch pin connection rod to the first end of the punch rod may be shorter than a distance from a sealing ring between the punch rod and the punch pin connection rod to the first end of the punch rod;
  • a distance from the sealing ring between the punch pin connection rod and the punch pin to the first end of the punch rod may be shorter than a distance from the face seal between the punch pin connection rod and the punch pin to the first end of the punch rod.
  • the first medium port may be disposed close to the first end of the punch rod, and the first heat-conducting medium conveying channel extends towards a direction close to the first end of the punch rod and goes beyond the first medium port to form a first buffer part;
  • the second heat-conducting medium conveying channel extends towards a direction close to the first end of the punch rod and goes beyond the second medium port to form a second buffer part.
  • the second aspect of the present disclosure provides a die casting machine.
  • the die casting machine includes a punch pin assembly according to the first to eighth possible implementations of the first aspect of the present disclosure; and a pressure chamber, herein the pressure chamber has a die casting cavity and a punch pin hole for allowing the punch pin to pass through.
  • the die casting cavity communicates with the outside of the pressure chamber through the punch pin hole.
  • a low-temperature heat-conducting medium flows from the first medium port or the second medium port into the first heat-conducting medium conveying channel or the second heat-conducting medium conveying channel, and then flows along the heat-conducting medium conveying loop; when flowing to a position favorable for heat transfer with the punch pin, the low-temperature heat-conducting medium exchanges heat with the punch pin, so that the punch pin is effectively cooled, thereby ensuring a steady die casting process and stable die casting quality;
  • the sealing rings are mounted and face seals are formed between the punch rod and the punch pin connection rod as well as between the punch pin connection rod and the punch pin, so that the dual sealing of the sealing rings and the face seals guarantees the sealing effect; and even if the sealing effect of the sealing rings becomes poor, the face seals may still ensure the sealing between the punch rod and the punch pin connection rod as well as between the punch pin connection rod and the punch pin, prevent quality problems of pores, low airtightness and the like of a produced casting due to the fact that a heat-conducting medium (such as water) in the heat-conducting medium conveying loop leaks out and enters the pressure chamber, and avoid frequent shutdown caused by frequent replacement of the sealing rings and influence on the production efficiency.
  • a heat-conducting medium such as water
  • FIG. 1 is an axial cross-sectional view of a punch pin assembly according to an exemplary implementation of the present disclosure, herein a pressure chamber is shown.
  • FIG. 1 is an axial cross-sectional view of a punch pin assembly according to an exemplary implementation of the present disclosure, herein a pressure chamber 1 is shown.
  • the punch pin assembly includes a punch rod 4 , a punch pin 2 and a punch pin connection rod 3 connected therebetween.
  • Multiple sealing rings 9 are mounted between the punch rod 4 and the punch pin connection rod 3 as well as between the punch pin connection rod 3 and the punch pin 2 , and multiple face seals (respectively a face seal 11 and a face seal 7 ) are formed between the punch rod 4 and the punch pin connection rod 3 as well as between the punch pin connection rod 3 and the punch pin 2 .
  • the punch rod 4 and the punch pin connection rod 3 are of hollow structures.
  • At least one portion of an acting heat-conducting medium conveying channel may be disposed in a way of achieving heat transfer with the punch pin 2 .
  • the heat-conducting medium conveying loop 12 is filled with a heat-conducting medium such as low-temperature (less than the temperature of the punch pin) water.
  • the heat-conducting medium flows along the heat-conducting medium conveying loop 12 , so as to realize heat transfer with the punch pin 2 to cool the punch pin 2 .
  • the dual action of the sealing rings 9 and the face seals 11 and 7 ensures the reliability of sealing between the punch rod 4 and the punch pin connection rod 3 as well as between the punch pin connection rod 3 and the punch pin 2 .
  • a specific arrangement solution of the heat-conducting medium conveying loop 12 is as follows: the punch rod 4 internally has a first heat-conducting medium conveying channel 13 and a second heat-conducting medium conveying channel 14 ; the first heat-conducting medium conveying channel 13 and the second heat-conducting medium conveying channel 14 communicate with the outside of the punch rod 4 respectively through a first medium port 6 and a second medium port 5 which are formed in the punch rod 4 ;
  • the punch pin connection rod 3 internally has the acting heat-conducting medium conveying channel; two ends of the acting heat-conducting medium conveying channel extend out of the punch pin connection rod 3 and respectively communicate with the first heat-conducting medium conveying channel 13 and the second heat-conducting medium conveying channel 14 to form the heat-conducting medium conveying loop 12 .
  • any one of the first medium port 6 or the second medium port 5 may communicate with a low-temperature heat-conducting medium source to receive a heat-conducting medium.
  • the flowing direction of the heat-conducting medium in the heat-conducting medium conveying loop 12 is: the first medium port 6 to the first heat-conducting medium conveying channel 13 to a third heat-conducting medium conveying channel 15 to a fourth heat-conducting medium conveying channel 16 to the second heat-conducting medium conveying channel 14 to the second medium port 5 .
  • the flowing direction of the heat-conducting medium in the heat-conducting medium conveying loop 12 is: the second medium port 5 , the second heat-conducting medium conveying channel 14 , the fourth heat-conducting medium conveying channel 16 , the third heat-conducting medium conveying channel 15 , the first heat-conducting medium conveying channel 13 , and the first medium port 6 .
  • the heat-conducting medium is water since the water is high in specific heat capacity, wide in source and low in usage cost.
  • the heat-conducting medium source may be a water supply pipe network (such as a tap water pipe network), and may also be a container such as a tank capable of holding water according to an actual requirement.
  • a specific structure of the punch rod 4 is as follows: the punch rod 4 is a revolving body; the first heat-conducting medium conveying channel 13 is of a cylindrical shape having an axis coinciding with the revolving center of the punch rod 4 ; and the second heat-conducting medium conveying channel is of a barrel shape having an axis coinciding with the revolving center of the punch rod 4 and having a circular-ring cross section.
  • the punch rod 4 may be of a non-revolving structure such as a prism
  • the cross section of the first heat-conducting medium conveying channel 13 may be of a special shape
  • the cross section of the second heat-conducting medium conveying channel 14 may be of a specially-shaped ring, as long as they are configured according to an actual requirement.
  • the punch pin connection rod 3 is a revolving body.
  • the acting heat-conducting medium conveying channel includes the third heat-conducting medium conveying channel 15 and the fourth heat-conducting medium conveying channel 16 .
  • the third heat-conducting medium conveying channel 15 may be of a cylindrical shape having an axis coinciding with the revolving center of the punch pin connection rod 3
  • the fourth heat-conducting medium conveying channel 16 may be of a barrel shape having an axis coinciding with the revolving center of the punch pin connection rod 3 and a circular-ring-shaped cross section.
  • the configuration is the same as that of the punch rod 4 , and no more repeated descriptions will be provided.
  • This configuration makes the acting heat-conducting medium conveying channel basically twice as long as the punch pin connection rod 3 , so that the internal space of the punch pin connection rod 3 is fully used.
  • the punch pin connection rod 3 with a relatively small size may hold a sufficient amount of heat-conducting medium, thereby ensuring the cooling capacity of the punch pin assembly.
  • a containing slot is formed in the end, adjacent to the punch pin connection rod 3 , of the punch pin 2 , and the end of the punch pin connection rod 3 adjacent to the punch pin 2 is held in the containing slot.
  • the containing slot plays a locating role during assembling of the punch pin connection rod 3 and the punch pin 2 ; and on the other hand, the side wall of the containing slot forms an inward restriction to the punch pin connection rod 3 in a lateral direction, so as to enhance the lateral connection strength between the punch pin connection rod 3 and the punch pin 2 and prolong the service life of the punch pin assembly.
  • the punch rod 4 is connected to the punch pin connection rod 3 through a thread 10 ; and/or, the punch pin connection rod 3 is connected to the punch pin 2 through a thread 8 .
  • the threads 10 and 8 for connection the installation and removal are convenient, and the punch pin assembly is convenient to repair and maintain (debris in the heat-conducting medium conveying loop 12 can be cleared conveniently).
  • the first medium port 6 and the second medium port 5 are disposed adjacent to each other at the first end of the punch rod 4 .
  • the first end of the punch rod 4 is opposite to the second end of the punch rod 4 .
  • the punch pin connection rod 3 is connected to the second end of the punch rod 4 .
  • This configuration makes the first heat-conducting medium conveying channel 13 and the second heat-conducting medium conveying channel 14 rightwards (in FIG. 1 , the right direction is right, and the left direction is left) completely extend to the second end of the punch rod 4 .
  • the punch rod 4 with a relatively small size may hold a sufficient amount of heat-conducting medium, thereby ensuring the cooling capacity of the punch pin assembly.
  • a distance from the face seal between the punch rod 4 and the punch pin connection rod 3 to the first end of the punch rod 4 is shorter than a distance from the sealing ring 9 between the punch rod 4 and the punch pin connection rod 3 to the first end of the punch rod 4 .
  • This configuration makes the face seal 11 to be closer to the first end of the punch rod 4 than the sealing ring 9 . That is, the face seal 11 is closer to the second heat-conducting medium conveying channel 14 .
  • the leaking heat-conducting medium may only flow to the face seal 11 , and would not continue to flow towards the sealing ring 9 under the sealing action of the face seal 11 , so that the leaking amount (equal to the volume of a space jointly defined by the leaking position of the second heat-conducting medium conveying channel 14 , the face seal 11 , the punch pin connection rod 3 and the punch rod 4 ) is relatively small.
  • the heat-conducting medium at the relatively small leaking amount is extremely low in flowability, and even does not flow, thereby ensuring a relatively small amount of heat-conducting medium which flows little and even does not flow and improving the cooling capacity of the punch pin assembly to cool the punch pin 2 more effectively.
  • a distance from the sealing ring 9 between the punch pin connection rod 3 and the punch pin 2 to the first end of the punch rod 4 is shorter than a distance from the face seal 7 between the punch pin connection rod 3 and the punch pin 2 to the first end of the punch rod 4 .
  • the cooling capacity of the punch pin assembly is further improved, and the punch pin 2 is cooled more effectively.
  • the first medium port 6 is disposed close to the first end of the punch rod 4 , and the first heat-conducting medium conveying channel 13 extends towards a direction close to the first end of the punch rod 4 and goes beyond the first medium port 6 to form a first buffer part 17 .
  • the heat-conducting medium flows more steadily and slowly between the first medium port 6 and the first heat-conducting medium conveying channel 13 , so as to avoid the influence on the sealing properties of the sealing ring 9 and the face seal 11 due to excessive impact on the first medium port 6 and the first heat-conducting medium conveying channel 13 during flowing of the heat-conducting medium and to further improve the sealing property of the punch pin assembly.
  • the second heat-conducting medium conveying channel 14 extends towards a direction close to the first end of the punch rod 4 and goes beyond the second medium port 5 to form a second buffer part 18 .
  • the sealing property of the punch pin assembly is further improved.
  • the first medium port 6 communicates with the heat-conducting medium source, and the punch pin 2 is cooled by the flowing of the heat-conducting medium source in the heat-conducting medium conveying loop 12 .
  • the low-temperature heat-conducting medium source flows along the first heat-conducting medium conveying channel 13 and the third heat-conducting medium conveying channel 15 in the middle, and then is heated by heat absorption at a portion, close to the punch pin 2 , on the third heat-conducting medium conveying channel 15 . Then, the heated heat-conducting medium source returns along the fourth heat-conducting medium conveying channel 16 and the second heat-conducting medium conveying channel 14 on the outer side.
  • the heat-conducting medium in the heat-conducting medium conveying loop 12 is in a horizontal state: when the liquid level of the heat-conducting medium in the second heat-conducting medium conveying channel 14 and the fourth heat-conducting medium conveying channel 16 is lower than the liquid level of the heat-conducting medium in the first heat-conducting medium conveying channel 13 and the third heat-conducting medium conveying channel 15 , the low-temperature heat-conducting medium which is not heated flows along the first heat-conducting medium conveying channel 13 and the third heat-conducting medium conveying channel 15 without resistance (the influence of the internal viscous resistance of the heat-conducting medium is neglected), which accelerates the flowing of the heat-conducting medium and further improves the cooling capacity of the punch pin assembly.
  • the present disclosure further discloses a die casting machine.
  • the die casting machine includes a pressure chamber 1 and any possible embodiments of the above punch pin assembly.
  • the pressure chamber 1 has a die casting cavity 19 and a punch pin hole 20 for allowing the punch pin to pass through.
  • the die casting cavity 19 communicates with the outside of the pressure chamber 1 through the punch pin hole 20 .
  • the punch pin 2 moves in a reciprocating manner along the punch pin hole 20 , so as to complete die casting work.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Punching Or Piercing (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
US16/712,074 2018-12-28 2019-12-12 Punch pin assembly and die casting machine having punch pin assembly Active 2039-12-18 US11420252B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811625692.3 2018-12-28
CN201811625692.3A CN109382496B (zh) 2018-12-28 2018-12-28 冲头总成及包括该冲头总成的压铸机

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US11420252B2 true US11420252B2 (en) 2022-08-23

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EP (1) EP3674014B1 (fr)
CN (1) CN109382496B (fr)
MA (1) MA47490B1 (fr)

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Publication number Priority date Publication date Assignee Title
CN110802209B (zh) * 2019-12-23 2021-11-23 重庆渝江压铸有限公司 一种环形冲头

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63163252U (fr) 1987-04-14 1988-10-25
JPH0195858A (ja) 1987-10-06 1989-04-13 Ube Ind Ltd プランジャーチップ構造
US4958862A (en) * 1988-10-03 1990-09-25 Dalmine Spa Hermetic metal pipe joint
US5048592A (en) * 1989-10-18 1991-09-17 Allper Ag Plunger for a diecasting machine
JP2011092968A (ja) 2009-10-29 2011-05-12 Ryobi Ltd ダイカスト用射出装置
US20140123848A1 (en) * 2011-06-28 2014-05-08 Copromec Die Casting S.r.I. Piston for a die-casting machine
CN104493126A (zh) 2014-12-09 2015-04-08 高要市力源压铸有限公司 一种压铸机压射冲头的润滑冷却方法及装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7108830B2 (en) * 2002-09-09 2006-09-19 Talon Composites Apparatus and method for fabricating high purity, high density metal matrix composite materials and the product thereof
JP2008238214A (ja) * 2007-03-27 2008-10-09 Bmg:Kk 金属ガラスの成形方法および金属ガラスの成形装置
CN201061825Y (zh) * 2007-06-21 2008-05-21 武汉工程大学 一种高真空压力铸造用压铸模的密封结构
CN201592241U (zh) * 2010-01-11 2010-09-29 美诺精密压铸(上海)有限公司 一种压铸冲头系统
CN103286295B (zh) * 2013-05-14 2014-12-24 吉林大学 带有密封环的仿生自润滑压铸冲头
CN103611914A (zh) * 2013-12-05 2014-03-05 昆山市珍和模具五金机械有限公司 一种水冷式熔铸冲头
CN206104846U (zh) * 2016-10-27 2017-04-19 浙江德昱汽车零部件有限公司 一种压铸机锤头部件防漏水结构
CN106694843A (zh) * 2017-02-22 2017-05-24 凯世曼铸造长春有限公司 压铸机冲头
CN108240514A (zh) * 2017-12-28 2018-07-03 国网湖南省电力有限公司 输电线路山火灭火用水带的快装连接接头
CN208011123U (zh) * 2018-02-27 2018-10-26 广州普里玛贸易有限公司 一种新型ppr管的附件弯头
CN208214266U (zh) * 2018-05-28 2018-12-11 江西东磊精密铸造有限公司 一种压铸机压射杆冷却系统
CN209288236U (zh) * 2018-12-28 2019-08-23 中信戴卡股份有限公司 冲头总成及包括该冲头总成的压铸机

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63163252U (fr) 1987-04-14 1988-10-25
JPH0195858A (ja) 1987-10-06 1989-04-13 Ube Ind Ltd プランジャーチップ構造
US4958862A (en) * 1988-10-03 1990-09-25 Dalmine Spa Hermetic metal pipe joint
US5048592A (en) * 1989-10-18 1991-09-17 Allper Ag Plunger for a diecasting machine
JP2011092968A (ja) 2009-10-29 2011-05-12 Ryobi Ltd ダイカスト用射出装置
US20140123848A1 (en) * 2011-06-28 2014-05-08 Copromec Die Casting S.r.I. Piston for a die-casting machine
CN104493126A (zh) 2014-12-09 2015-04-08 高要市力源压铸有限公司 一种压铸机压射冲头的润滑冷却方法及装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Machine Translation of Dannoura (JP H01-095858A, Apr. 13, 1989, cited in IDS filed Jul. 21, 2020). (Year: 1989). *
Supplementary European Search Report in the European application No. 19196069.9, dated Apr. 20, 2020, 8 pgs.

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Publication number Publication date
EP3674014A1 (fr) 2020-07-01
US20200206807A1 (en) 2020-07-02
CN109382496A (zh) 2019-02-26
CN109382496B (zh) 2024-01-23
MA47490B1 (fr) 2021-10-29
EP3674014B1 (fr) 2021-08-18
MA47490A (fr) 2021-04-14

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